https://www.cad-steel.co.za/product/342
Z Sections - Lipped (Equal Flange) - CF-Z 175x75x20x3.0
Free Steel Sections, AutoCAD blocks - all the 'Blue Book' sections, with accompanying images giving dimensons and mass per meter of all BS5950 steel sections.
z sectionslippedequalflange
https://www.cad-steel.co.za/product/358
Z Sections - Lipped (Unequal Flange) - CF-Z 160x50x57x20x3.0
Free Steel Sections, AutoCAD blocks - all the 'Blue Book' sections, with accompanying images giving dimensons and mass per meter of all BS5950 steel sections.
z sectionslippedunequalflange
https://www.zhongweibuildings.com/blog/how-to-select-the-right-types-of-purlins-for-your-roofing-system
How to Choose Roof Purlins: C vs Z Sections, Coatings & Design Tips
Struggling with roof sag, ponding, or premature corrosion? Learn how C-section vs Z-section purlins, ASTM A653 coatings, and proper bridging impact stability,...
how to choosez sectionsdesign tipsroofpurlins